Wireless Sensor Networks (WSNs) present a new\r\ngeneration of real-time embedded systems with limited\r\ncomputation, energy and memory resources. They are\r\nbeing used in a wide variety of applications where\r\ntraditional networking infrastructure is practically\r\ninfeasible. Appropriate cluster-head node election can\r\ndrastically reduce the energy consumption enhancing so\r\nthe network lifetime. In this paper, a fuzzy logic\r\napproach to cluster-head election is proposed based on\r\nthree descriptors - energy, concentration and centrality\r\nof nodes. Simulation shows that depending upon\r\nnetwork configuration, a substantial increase in\r\nnetwork lifetime can be accomplished as compared to\r\nprobabilistically selecting the nodes as cluster-heads\r\nusing only local information.
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